本文实例为大家分享了基于servlet实现统计网页访问次数的具体代码，供大家参考，具体内容如下
一、基础知识
（1）ServletContext和ServletConfig的区别
ServletContext作为整个web应用的共享数据
ServletConfig只是作为当前servlet的数据共享，下一个servlet访问时，是访问不到的
二、代码实现
将显示的统计次数显示在HTML页面上：
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet("/countServlet1")
public class countServlet1 extends HttpServlet {
private static final long serialVersionUID = 1L;
public countServlet1() {
super();
// TODO Auto-generated constructor stub
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//设置字符编码
request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=utf-8");
//获取全局的共享数据
ServletContext servletContext = this.getServletContext();
//获取计数器count
Integer count = (Integer) servletContext.getAttribute("count");
//如果获取的计算器对象为空 ，说明是第一次访问，并将count，放入servletCount
if( servletContext.getAttribute("count") == null) {
count = 1;
servletContext.setAttribute("count", count);
}else {
//否则就不是第一次访问，将登陆的计数器进行加1的数据更新
servletContext.setAttribute("count", count+1);
}
//将登陆的次数显示在页面上
PrintWriter out =response.getWriter();
out.print("<!DOCTYPE html>\r\n" +
"<html>\r\n" +
"<head>\r\n" +
"<meta charset=\"UTF-8\">\r\n" +
"<title>登陆网页次数统计</title>\r\n" +
"</head>\r\n" +
"<body>");
out.print("<h1>");
out.print("您是第 "+ servletContext.getAttribute("count")+"位访客");
out.print("<h1>");
out.print("</body>\r\n" +
"</html>
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}三、在不同浏览器显示的次数
（1）在eclipse中显示的次数
（2）在火狐中显示的次数
（3）在360中显示的次数
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程网。
